<template>
  <div class="theme-container" :class="pageClasses" @touchstart="onTouchStart" @touchend="onTouchEnd">
    <div v-if="!absoluteEncryption">
      <transition name="fade">
        <LoadingPage v-show="firstLoad" class="loading-wrapper" />
      </transition>
      <transition name="fade">
        <Password v-show="!isHasKey" class="password-wrapper-out" key="out" />
      </transition>
      <div :class="{ 'hide': firstLoad || !isHasKey }">
        <Navbar v-if="shouldShowNavbar" @toggle-sidebar="toggleSidebar" :class="{ 'showNavbarColor': shouldShowSidebar }"
          :isHome="isHome" />

        <div class="sidebar-mask" @click="toggleSidebar(false)"></div>

        <Sidebar :items="sidebarItems" @toggle-sidebar="toggleSidebar">
          <template slot="top">
            <PersonalInfo />
          </template>
          <slot name="sidebar-bottom" slot="bottom" />
        </Sidebar>

        <Password v-show="!isHasPageKey" :isPage="true" class="password-wrapper-in" key="in"></Password>
        <div :class="{ 'hide': !isHasPageKey }">
          <slot></slot>
        </div>
      </div>
    </div>
    <div v-else>
      <transition name="fade">
        <LoadingPage v-if="firstLoad" />
        <Password v-else-if="!isHasKey" />
        <div v-else>
          <Navbar v-if="shouldShowNavbar" @toggle-sidebar="toggleSidebar" />

          <div class="sidebar-mask" @click="toggleSidebar(false)"></div>

          <Sidebar :items="sidebarItems" @toggle-sidebar="toggleSidebar">
            <template slot="top">
              <PersonalInfo />
            </template>
            <slot name="sidebar-bottom" slot="bottom" />
          </Sidebar>

          <Password v-if="!isHasPageKey" :isPage="true"></Password>
          <div v-else>
            <slot></slot>
          </div>
        </div>
      </transition>
    </div>
</div>
</template>

<script>
import Navbar from '@theme/components/Navbar'
import Sidebar from '@theme/components/Sidebar'
import PersonalInfo from '@theme/components/PersonalInfo'
import Password from '@theme/components/Password'
import { setTimeout } from 'timers'
import moduleTransitonMixin from '@theme/mixins/moduleTransiton'

export default {
  mixins: [moduleTransitonMixin],

  components: { Sidebar, Navbar, Password, PersonalInfo },

  props: {
    sidebar: {
      type: Boolean,
      default: true
    },
    sidebarItems: {
      type: Array,
      default: () => []
    },
    isHome: {
      type: Boolean,
      default: false
    }
  },

  data() {
    return {
      isSidebarOpen: false,
      isHasKey: true,
      isHasPageKey: true,
      firstLoad: true
    }
  },

  computed: {
    absoluteEncryption() {
      return this.$themeConfig.keyPage && this.$themeConfig.keyPage.absoluteEncryption === true
    },

    shouldShowNavbar() {
      const { themeConfig } = this.$site
      const { frontmatter } = this.$page

      if (
        frontmatter.navbar === false ||
        themeConfig.navbar === false
      ) return false

      return (
        this.$title ||
        themeConfig.logo ||
        themeConfig.repo ||
        themeConfig.nav ||
        this.$themeLocaleConfig.nav
      )
    },

    shouldShowSidebar() {
      // const { frontmatter } = this.$page
      // return (
      //   this.sidebar !== false &&
      //   !frontmatter.home &&
      //   frontmatter.sidebar !== false &&
      //   this.sidebarItems.length
      // )
      return this.sidebarItems.length > 0
    },

    pageClasses() {
      const userPageClass = this.$frontmatter.pageClass
      const pageTransparent = this.$frontmatter.isFull
      return [
        {
          'no-navbar': !this.shouldShowNavbar,
          'sidebar-open': this.isSidebarOpen,
          'no-sidebar': !this.shouldShowSidebar,
          'page-transparent': pageTransparent
        },
        userPageClass
      ]
    }
  },

  mounted() {
    this.$router.afterEach(() => {
      this.isSidebarOpen = false
    })
    this.hasKey()
    this.hasPageKey()
    this.handleLoading()
  },

  methods: {
    hasKey() {
      const keyPage = this.$themeConfig.keyPage
      if (!keyPage || !keyPage.keys || keyPage.keys.length === 0) {
        this.isHasKey = true
        return
      }

      let { keys } = keyPage
      keys = keys.map(item => item.toLowerCase())
      this.isHasKey = keys && keys.indexOf(sessionStorage.getItem('key')) > -1
    },
    hasPageKey() {
      let pageKeys = this.$frontmatter.keys
      if (!pageKeys || pageKeys.length === 0) {
        this.isHasPageKey = true
        return
      }

      pageKeys = pageKeys.map(item => item.toLowerCase())

      this.isHasPageKey = pageKeys.indexOf(sessionStorage.getItem(`pageKey${window.location.pathname}`)) > -1
    },
    toggleSidebar(to) {
      this.isSidebarOpen = typeof to === 'boolean' ? to : !this.isSidebarOpen
    },

    // side swipe
    onTouchStart(e) {
      this.touchStart = {
        x: e.changedTouches[0].clientX,
        y: e.changedTouches[0].clientY
      }
    },

    onTouchEnd(e) {
      const dx = e.changedTouches[0].clientX - this.touchStart.x
      const dy = e.changedTouches[0].clientY - this.touchStart.y
      if (Math.abs(dx) > Math.abs(dy) && Math.abs(dx) > 40) {
        if (dx > 0 && this.touchStart.x <= 80) {
          this.toggleSidebar(true)
        } else {
          this.toggleSidebar(false)
        }
      }
    },

    handleLoading() {
      const time = this.$frontmatter.home && sessionStorage.getItem('firstLoad') == undefined ? 1000 : 0
      setTimeout(() => {
        this.firstLoad = false
        if (sessionStorage.getItem('firstLoad') == undefined) sessionStorage.setItem('firstLoad', false)
      }, time)
    }
  },

  watch: {
    $frontmatter(newVal, oldVal) {
      this.hasKey()
      this.hasPageKey()
    }
  }
}
</script>

<style lang="stylus" scoped>
.theme-container
  .loading-wrapper
    position absolute
    z-index 22
    top 0
    bottom 0
    left 0
    right 0
    margin auto
  .password-wrapper-out
    position absolute
    z-index 21
    top 0
    bottom 0
    left 0
    right 0
    margin auto
  .password-wrapper-in
    position absolute
    z-index 8
    top 0
    bottom 0
    left 0
    right 0
  .hide
    height 100vh
    overflow hidden

.fade-enter-active, .fade-leave-active {
  transition: opacity .5s;
}
.fade-enter, .fade-leave-to /* .fade-leave-active below version 2.1.8 */ {
  opacity: 0;
}
</style>
